Surface cooler



u ,1933. F. G. CORNELL, JR 1,912,432

SURFAE COOLER Filed Jan. 12, 1932 2 Sheets-Sheet 2 'IIIIIIIIII) gVENTOR ATTORNE Patented June 6, 1933 UNITED STATES PATENT OFFICE FRITZ G. CORNELL, JR, OF MOUNTAIN LAKES, NEW JERSEY, ASSIGNORt TO JENSEN CREAMERY MAGHINERY 00., OF BLOOMFIELD, NEW JERSEY, A CORPORATION OF NEW YORK SURFACE COOLER Application filed January 12, 1932.

This invention relates to surface coolers.

Such devices comprise a plurality of serially connected superposed horizontal pipes through which cooling fluid is passed while liquid to be cooled is caused to flow downwardly over the pipes. lVhen operatmg these devices, there is considerable difference in the temperature between the bottom and top pipes and a proportional temperature difference between the intermediate pipes, thus causing uneven expansion or contraction of the same.

An object of this invention is a surface cooler in which the pipes are so supported and connected that unequal expansion of the pipes has no detrimental effect upon the ap paratus as a whole.

In a surface cooler embodying the 111- vention, the ends of the pipe are joined by returns which rest one upon the other and which are maintained in vertical alinement by guides having sliding connection with the returns. The returns are capable of relative movement due to this arrangement thereby permitting uneven expansion and contraction of the different pipes without unduly straining the apparatus as a whole.

Other objects, novel features and advantages of this invention will be apparent from the following specification and accompanying drawings, wherein:

Fig. 1 is a side elevation of an apparatus embodying the invention; I

Fig. 2 is a section on the line 22 of Fig. 1;

Fig. 3 is an enlarged fragmentary side elevation partly in section;

Fig. 4 is a fragmentary end view;

Fig. 5 is a fragmentary end view of a modification, and

Fig. 6 is a view similar to Fig. 2 of a modilied embodiment of the invention.

Referring now more especially to Fig. 1, 10 represents posts for supporting the surface cooler. These posts also support a trough (not shown) from which liquid is delivered to the top of the cooler and a pan 11 into which the cooled liquid is discharged from the cooler. The cooler illustrated in Fig. 1 is composed of three sections which Serial No. 586,093.

are of identical structure and may be considered as independent units, the cooler being made up of as many units as the conditions require.

Each unit comprises a plurality of hori zontal superposed pipes 12 which are connected together in series by means subsequently to be described. A standard 13 has hollow horizontal portions 14 connected to the ends of the top and bottom pipes and the pipes 15 are connected to the portions 1% to circulate liquid through the pipes 12. Arms 16 extend from the standard and have apertures through which extend two of the posts 10, the standard being thus held in vertical position. The left hand ends of the intermediate pipes are connected by returns 17 provided with forked projections 18 which receive a vertical tongue 19 projecting laterally from the standard 13 and extending between the horizontal portions 14. The right hand ends of the pipes are connected by returns 20 having lateral projections 21 provided with elongated slots 22 which receive the remaining post 10. The returns are joined to the horizontal pipes welding, brazing or soldering.

The standard 13 is supported by a bracket 24 and the bottom return 20 is supported by a collar 25 engaging the under projection 21 thereof. The fork 18 of the bottom return 17 merely rests upon the lower portion 14; of

the standard 13 and each remaining return rests directly on the return next beneath it. The bottom projection of the second return 20 rests directly on and is supported by the upper projection of the bottom return and so on up the whole height of the stack. The standards 13 and the post 10 passing through the slots 22 serve to maintain the returns invertical alinement while permitting expansion and contraction of the pipes and by reason of this arrangement uneven expansion or contraction of the pipes produces no strain on the apparatus.

The returns 20 are provided with cleaning openings 26 arranged in alinement with the pipes and closed by plugs 27. Brushes may be introduced into the device through these openings for cleaning the pipes and keeping 1 preferably by the apparatus in eflicient operating condition. Instead of a pair of such openings there may be provided a single opening midway between the pipes and closed by a cap 5 28, this arrangement being shown in Fig. 5.

In the form of the invention disclosed in F ig. 1, the bracket 24 may be dispensed with and set screws provided in the arms 16 may be used for holding the bottom standard 10 in position on the left hand posts 10.

In constructing this apparatus, the various units are separately assembled and then are brought into proper relation merely by sliding the same downthe posts 10. It is thus a simple matter to add or remove a unit from the apparatus.

In the modification disclosed in Fi 6, the arms 16 are provided with recesses 29 instead of apertures and the returns are provided with lugs 30 through which extends a bolt 31 to form the elongated slot through which the post 10 extends. The brackets 2A of Fig. l are replaced by collars 32 on which the arms 16 rest. it-l1 this arrangement, the units are mounted on the post by hooking one arm 16 on to a post 10 and swinging the unit until the other arm 16 hooks on to the second post 10. This movement causes the lugs 30 to straddle the remaining post 10, the bolt 31 having been removed. After the unit is in place, the bolt 31 is inserted, thereby holding the returns 20 in position on the post 10. The dismounting is efiective merely by reversing the steps.

Each of the lateral extending portions 1% and the returns 17 and 20 are provided with downwardly extending bulges 33 which lie outside the oblique flanges 34. The flanges 34 prevent cooled liquid from flowing out onto the returns 20 and the bulges 33 provide drip points exterior of the upper ends of the flanges thus preventing condensate on the returns from getting into the liquid being cooled.

It is of course understood that various changes may be made in the structure of the above described apparatus, without in any way departing from the spirit of the invention as defined in the appended claims.

I claim:

1. A device of the character described comprising a plurality of superposed horizontal pipes connected at their ends by re- 7 turns, means for supporting the bottom return of one set of returns, each of the other returns of the set being slidably supported by the return next below it, and means for maintaining said returns in vertical alinement while permitting differential expansion or contraction of said pipes.

2. A device of the character described comprising a plurality of superposed horizontal pipes connected at their ends by returns, said returns having slidably engaging projections for supporting one by another, and vertical guides engaging said projections to maintain said returns in vertical alinement while permitting differential expansion and contraction of said pipes.

3. A device of the character described comprising a plurality of superposed horizontal pipes having their ends connected by returns, one set of returns having slidably engaging forked projections for supporting one by another, and a guide having a vertical tongue received by said forked projections for maintaining said returns in vertical alinemcnt while permitting diii'erential expansion and contraction of said pipes.

at. A device of the character described comprising a plurality of superposed horizontal pipes having their ends connected by returns, said returns having slidably engaging slotted projections for supporting one by another and a vertical guide passing through said slots to maintain said returns in vertical alinement while permitting differential expansion and contraction of said pipes.

5. A device of the character described comprising a plurality of superposed horizontal pipes, a standard having top and bottom horizontal hollow'portions connected to corresponding ends of the top and bottom pipes, returns connecting the remaining 7 ends of said pipes, the bottom return of one set of returns having forked projections slidably engaging the bottom horizontal hollow portion of the standard and each remaining return of the set having a forked projection slidably engaging the corresponding projection of the return next below it, a vertical tongue projecting from said standard and being received in said projections to maintain said returns in vertical alinement while permitting difierential expansion or contraction of said pipes.

6. A device of the character described comprising a plurality of superposed horizontal pipes connected at their ends by returns, means for supporting each bottom return, each of the other returns being slidably supported by the return next below it, and means for maintaining said returns in vertical alinement while permitting differential expansion or contraction of said pipes.

7. A device of the character described comprising a plurality of superposed horizontal pipes having their ends connected by returns, the returns at one end being provided with forked projections and the returns at the other end being provided with projections having elongated slots, said projections having slidable engagement for supporting one by another, a guide having a vertical tongue received by said forked projections, and a ertical guide passing through said elongated slots.

8. An apparatus of the character described comprising a plurality of horizontal superposed pipes, a standard having top and bottom horizontal hollow portions connected to corresponding ends of the top and bottom pipes, returns cOnnected to the corresoonding setof ends of the remaining pipes and having forked projections, the projection of the bottom return resting on the bottom ho zontal portion or the standard and projection of each remaining return restdirectly on a projection of the return next below it, said standard having a vertical tongue received in said projections, returns connecting the remaining ends of said pipes, said returns having projections provided with elongated slots, a vertical guide extending through said slots, and means slidably supporting the bottom return, each of the remaining returns being slidably sup- 29 ported by the return next below it.

9. An apparatus of the character dese 'ibed comprising a plurality of horizontal superposed pipes connected at their ends by returns, means supporting the bottom pair cturns and each of the remaining returns directly on the return neXt below it,

means for maintaining said pipes ertical alinenient, apertures in one set of r turn bends for access to the pipes, and plugs normally closing said apertures.

10. An apparatus of the character described comprising a plurality of superposed h rizontal pipes connected at their ends by re turns, oblique surfaces on said returns, and

l uiwardly projecting bulges on said reurns and spaced outwardly of the upper portions of said surfaces.

11. An apparatus of the character described comprising a plurality of superposed 49 horizontal pipes connected at their ends by eturns, apertures in one set of returns in linement with said pipes, plugs normally ing said apertures, supporting means and )rojections extending laterally from said e ui into engagement with said support- -n 1 means.

i2. An apparatus of the character dest 'ibed comprising a plurality of superposed horizontal pipes connected at their ends by returns, means supporting each bottom return, each of the other returns being slidably supported by the return next below it, apertures in one set of returns in alinement with said pipes, plugs normally closins said apertures, a guioe arranged latera iy of said returns and projections extend laterally from said 'eturns into engagelllnllt witi saie guide for maintaining said returns in vertical alinementwhile permitting differential expansion or contraction of said pipes.

In testimony whereof, I have signed my name to this specification.

FRITZ G. CORNELL, JR. 

